London Bridge, Lake Havasu City, Arizona - 1971 Medallion Encased in Lucite ... Bronze/Brass token inside the Lucite casing measures 2-5/8" diameter and the casing with token weigh 14 oz. This is a great collectible and display piece commemorating the opening of the reconstructed (original) London Bridge in the city of Lake Havasu, AZ in October, 1971.